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XRP6658 Datasheet(PDF) 1 Page - Exar Corporation |
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XRP6658 Datasheet(HTML) 1 Page - Exar Corporation |
1 / 11 page X XR RP P6 66 65 58 8 1 1A A 1 1..5 5M MH Hz z P PF FM M/ /P PW WM M S Sy yn ncch hrro on no ou us s S Stte ep p--D Do ow wn n C Co on nv ve errtte err September 2011 Rev. 1.5.0 Exar Corporation www.exar.com 48720 Kato Road, Fremont CA 94538, USA Tel. +1 510 668-7000 – Fax. +1 510 668-7001 GENERAL DESCRIPTION The XRP6658 is a synchronous current mode PWM step down (buck) converter capable of delivering up to 1 Amp of current and optimized for portable battery-operated applications. Based on a current mode 1.5MHz constant frequency PWM control scheme, the XRP6658 reduces the overall component count and solution footprint as well as provides a low output voltage ripple and excellent line and load regulation. It also implements a PFM mode to improve light load efficiency as well as a 100% duty cycle LDO mode. Output voltage is adjustable to as low as 0.6V with a better than 3% accuracy while a low quiescent current supports the most stringent battery operating conditions. Built-in over temperature and under voltage lock-out protections insure safe operations under abnormal operating conditions. The XRP6658 is offered in a RoHS compliant, “green”/halogen free 5-pin SOT23 package. APPLICATIONS Portable Equipments Battery Operated Equipments Audio-Video Equipments Networking & Telecom Equipments FEATURES Guaranteed 1A Output Current Input Voltage: 2.5V to 5.5V 1.5MHz PWM Current Mode Control PFM Mode Operations at Light Load 100% Duty Cycle LDO Mode Operations Achieves 97% Efficiency Adjustable Output Voltage Range As Low as 0.6V with ±3% Accuracy Internal Compensation Network 15µA Quiescent Current Over Temperature & UVLO Protections RoHS Compliant “Green”/Halogen Free 5-Pin SOT23 Package TYPICAL APPLICATION DIAGRAM Fig. 1: XRP6658 Application Diagram |
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